Author Topic: Engine pinging after DASC installation... (Read 8651 times)

bearsbmw · « **Reply #15 on:** March 18, 2009, 04:24:44 PM »

How is she running now?

HaNasich · « **Reply #16 on:** March 19, 2009, 02:09:30 AM »

currently - no change.
i just went from 95 octane fuel to 98.
hearable pinging is almost gone.
i also bought Innovate LM-1 and i will be installing it tomorrow in order to get better figures of the Air/Fuel ration that im running.
i looked as the injectors on my car and stragnly they are not all with the same p/n.
3 of them are from XXX.XXX p/n and one ends with XXXXXXX245.

the options for me are like this:
1. install a xxxxxxxx.990 dme on my car - which support pinging detection
2. learn a/f ratio and try to fix it using the RRFPR
3. change spark plugs
4. use 98 fuel only in my car

options 3 and 4 will be implemented starting tomorrow (i will keep this post updated) and later on i will add option 1 while leaving option 2 for "R&D" use only

Ron.

nuvolarossa · « **Reply #17 on:** March 19, 2009, 02:23:00 AM »

write here the exact part number of those injectors to see if they flow the same.

Install the LM-1 as Innovate instructions and check the air fuel ratio through all the range, or better record a log of third-fourth gear from low to revlimiter and then post it here.

So we will know if the problem is the fueling or if it's other.

ludiagsm · « **Reply #18 on:** March 19, 2009, 03:33:01 AM »

Pls give us a last new pictures from your engine bay , i think that your iddle speed motor is not on his right place ,he must do a baipas the drossel valve nothing more , the karter gases must be taken out free to the athmosfere or on their road you can use oilcatch can and than free in atmosfere (hot carter gases in your intake can be a reason for pinging too) .

And one more question do you have any performance chip on your car what is your rev limiter moust of performance chps for 318is has high ignition advance witch is bad for boosted engine and pinging that you had may be becouse of that if you dont have special chip for boosted aplication with retarded advance you must run with original chip.

pp:sorry for my einglish hope you anderstand

HaNasich · « **Reply #19 on:** March 19, 2009, 04:06:40 AM »

Nuvolarossa - i will upload the info tomorrow.
i am going to mount the WB sensor in the end of the exhaut pipe, my car has no cat. converter and i dont have an easy access to install a bung underneath the car.

in case anyone has info about how can connect the RPM meter to my car as well - it will be great - i will be able to monitor where exactly do i have the problem.

LudiaGSM - the engine and DME in my car is stock.
management is from 1990 318IS and engine is 1995 M42 DISA
i will post later on a current picture of my engine bay.
at first the ICV and engine carter gases where connected together using a T connector without the PCV and it made the engine idle rough.
now they are connected together, but the PCV is installed between the engine breather and the T connector and the cars idle smooth.

Ron.

rob_e30 · « **Reply #20 on:** March 19, 2009, 09:00:25 AM »

Quote from: HaNasich;68554

...
the options for me are like this:
1. install a xxxxxxxx.990 dme on my car - which support pinging detection
2. learn a/f ratio and try to fix it using the RRFPR
3. change spark plugs
4. use 98 fuel only in my car

options 3 and 4 will be implemented starting tomorrow (i will keep this post updated) and later on i will add option 1 while leaving option 2 for "R&D" use only ...

I know those look like options to you, but I would do all of them. The only thing I would consider as an option would be #4 but I would run the good gas until you know the problem is solved.

HaNasich · « **Reply #21 on:** March 19, 2009, 03:05:10 PM »

Hi Rob
i think my that my words wasn't as clear - in options i meant measure to take in order to have my engine run correct, not as a "nice to have" stuff.
my car is and will be running on 98 octane fuel.
it will take me some time to get a XXXXXX990 DME since M42 is pretty rare in my country and from what i could locate on Ebay you could get one for 50$ or for 250$ - depend on how patient you are.

im attaching a picture of my current engine bay.
please note that the vacuum and cooling hoses are a bit different.
i had to modify the stock cooling hose sent in the DASC kit (i only used 2/3 of it and had to make it 10cm long in some part to have it connect to my radiator) - cooling configuration is as for "tropical weather" aka large radiator.
the dirt near the radiator cap is for me fixing my heater core at the same time (piping was connected the other way around) and alot of debris was coleted than.

i also fixed the mounting for the ingnition coil for a permanent metal one.

Ron.